Marion Pressure Treating
This site is currently on the EPA Superfund National Priorities List and remains under federal cleanup oversight. Most-cited contaminant of concern: 1,2-Dihydroacenaphthylene.
State Highway 551 Near Sh 33 Junction, Marion, Louisiana · ZIP 71260 · EPA ID LAD008473142
Listing-date and cleanup-phase enrichment from EPA's per-site SEMS profile is queued for a follow-up ingest pass. Until then, this section will populate from EPA's published timeline data.
Notable Signals
No notable signals at this Superfund site for the current ingest. Cleanup-phase and SEMS-action flags are deferred to a follow-up engineering pass.
What's In This Site
Each row pairs a contaminant with the medium it was found in (the exposure pathway). Hover any named contaminant for an agency-cited health-risk summary. Cited count = number of SEMS decision records (RODs and related) that name the pair.
Showing the top 30 pairs by SEMS citation count. 22 additional (contaminant, pathway) pairs are recorded for this site.
Groundwater Systems Serving Communities Within 3 Miles
The 3 systems below draw on groundwater (or mixed sources) and serve communities whose centroid sits within 3 miles of this site. Distance is to the served-city centroid — SDWIS does not expose individual wellhead locations, so this is a proximity screen, not a wellhead-impact assessment.
| Water system | Serves | Distance | Population served | Source | Status |
|---|---|---|---|---|---|
| Linville-Haile Water System Private | Marion | 1.0 mi | 1,635 | UNRESOLVED | |
| Marion Water System Municipal | Marion | 1.0 mi | 1,512 | UNRESOLVED | |
| Litroe Water System Private | Marion | 1.0 mi | 369 | UNRESOLVED |
Methodology: served-city centroid (TIGER 2020) is used as the PWS coordinate. Source-water classification from SDWIS primary_source_code; only groundwater and mixed-source systems are queried. Click any system above for its full SDWIS profile.
Who Lives Near This Site
Union County, Louisiana (no Census block groups within 1 mile and no host city — falling back to containing county): a population of 21,049. Why we surface this →
Low-income
People of color
Under age 5
Over age 64
Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror). NPL site proximity contributes to the national EJ pattern; indicator-level percentile and disparity scores are surfaced on the county page and the state page.
Source. EPA Superfund Enterprise Management System (SEMS) · retrieved 2026-05-07. SEMS is a federal public-domain dataset under 17 USC §105.
What this is not. We report EPA's published Superfund record — site listing, status, and contaminants of concern as named in EPA's decision documents. We do not perform site visits, independent air or water sampling, or current-state health-risk assessment. NPL listing reflects EPA's Hazard Ranking Score at a point in time; it does not by itself describe present-day exposure.